DalitDalit (from dalita meaning "broken/scattered"), also previously known as untouchable, is the lowest stratum of the castes in the Indian subcontinent. Dalits were excluded from the four-fold varna system of Hinduism and were seen as forming a fifth varna, also known by the name of Panchama. Dalits predominantly follow Hinduism, with significant populations of the adherents of Buddhism, Sikhism, Christianity, and Islam. Scheduled Castes is the official term for Dalits, who get reservation under Positive discrimination, as per the constitution of India.
UntouchabilityUntouchability is a form of social institution that legitimises and enforces practices that are discriminatory, humiliating, exclusionary and exploitative against people belonging to certain social groups. Although comparable forms of discrimination are found all over the world, untouchability involving the caste system is largely unique to South Asia. The term is most commonly associated with treatment of the Dalit communities in the Indian subcontinent who were considered "polluting".
Outcast (person)An outcast is someone who is rejected or cast out, as from home or from society or in some way excluded, looked down upon, or ignored. In common English speech, an outcast may be anyone who does not fit in with normal society, which can contribute to a sense of isolation. Compare the concept of sending to Coventry. In Ancient Greece, the Athenians had a procedure known as ostracism in which all citizens could write a person's name on a shard of broken pottery (called ostraka) and place it in a large container in a public place.
Burakuminis a term for ethnic Japanese people who are believed to be descended from members of the pre-Meiji castes which were associated with 'defilement', such as executioners, undertakers, slaughterhouse workers, butchers, and tanners. The term encompasses both the historical eta and hinin outcasts. During Japan's feudal era, these occupations acquired a hereditary status of untouchability, and became an unofficial caste of the Tokugawa class system during the Edo period.
CasteA caste is a fixed social group into which an individual is born within a particular system of social stratification: a caste system. Within such a system, individuals are expected to: marry exclusively within the same caste (endogamy), follow lifestyles often linked to a particular occupation, hold a ritual status observed within a hierarchy, and interact with others based on cultural notions of exclusion, with certain castes considered as either more pure or more polluted than others.